<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <input type="radio" name="sex" value="男" v-model="isSex">男
        <input type="radio" name="sex" value="女" v-model="isSex">女
    </div>
    <script>
        const vm = new Vue({
            el: '#app',
            data() {
                return {
                    isSex:''
                }
            },
        })
    </script>
</body>

</html>